OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application
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/*
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* edma_test.c
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* brief EDMA3 Test Application4 H6 ?8 B% n8 H! b& s6 F' Z0 F: W
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* This file contains EDMA3 Test code.3 e+ x% m- ^6 y9 E& q. u% N4 i
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE9 ^$ K3 [: ^. w
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.. p/ L5 Q! f: n
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.) R) J$ H; O$ u
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any, a. I4 `9 M1 v( [
* kind, whether express or implied; without even the implied warranty: ]# n9 H5 u# R ]& C; U
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.; l9 g: a4 x$ v- z0 Y9 _& D- `
*/
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#include <linux/module.h>
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#include <linux/init.h> N$ K; Y6 {4 |# Y8 f
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>) ~) J5 k2 C3 W0 B$ r! f4 p. o k
#include <linux/moduleparam.h>% b/ j$ a( \0 y4 h ^7 F
#include <linux/sysctl.h>" s% C0 f4 W1 h5 u8 A( w
#include <linux/mm.h>4 P& `- T! L0 W* O; N- F8 R5 {
#include <linux/dma-mapping.h>( } h: Q% q9 f* M5 m% g8 {/ ~
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#include <mach/memory.h>7 V& D0 O9 M9 S# i: ~
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>: K# [2 T5 ]6 g9 S- y
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/1 k& h3 L S8 N% U+ ^
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)1 ?( v6 c# P* ]' v
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)$ R* L9 D# [8 M0 l
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT3 I& ^ k# t$ j$ Y$ x+ }- V
#endif8 {; H, J) o+ N. E& B l) T
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)# e8 d& d$ v" p9 C) o; B
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 203 t8 |$ U* z7 S1 n
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23+ a! i+ u K, T1 O2 m
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;3 s" ]! t+ p$ s; K
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);/ E/ j+ z! Z& `' ]- y- ^" b
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);, M5 O" Q8 g9 B. J
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% i3 k: ]* g. D& l! H
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;: M- V* Q) ~0 y2 R
dma_addr_t dmaphysdest2 = 0;: q2 U$ m# C9 i4 z, M: k0 f7 \$ T: s
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;+ L5 |5 U1 }5 |$ c' ]6 x( ?
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;- e8 b8 N1 g% g) `$ \
static int bcnt = 8;
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static int ccnt = 8;, i+ o3 D4 F3 j- d! V( t
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);9 p3 j1 I2 |$ e4 l8 O
module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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[未解决] OMAPL138如何在Linux下使用EDMA3驱动